mybatis-3 | MyBatis SQL mapper framework for Java | Object-Relational Mapping library
kandi X-RAY | mybatis-3 Summary
kandi X-RAY | mybatis-3 Summary
[Project Stats] The MyBatis SQL mapper framework makes it easier to use a relational database with object-oriented applications. MyBatis couples objects with stored procedures or SQL statements using an XML descriptor or annotations. Simplicity is the biggest advantage of the MyBatis data mapper over object relational mapping tools.
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Top functions reviewed by kandi - BETA
- Polls a connection from the pool .
- Parse the statement .
- Find the JAR URL for a resource .
- Starts the downloader .
- Parse a SQL statement node .
- Execute SQL command .
- Sets properties from the cache .
- Creates the autoMappings for the given result set .
- Insert an SQL statement .
- Process a result map element .
mybatis-3 Key Features
mybatis-3 Examples and Code Snippets
Lines of Code : 50License : Strong Copyleft (CC BY-SA 4.0)
Copyenum PersistenceType {
JPA,
MYBATIS
}
@RestController
@RequestMapping("/manufacturers")
public class ManufacturesController {
public static final Logger LOG = LogManager.getLogger(ManufacturesController.cl
create table mbtest.users (
id serial primary key,
name varchar(20)
);
insert into mbtest.users (name)
values (#{name,jdbcType=VARCHAR})
try (SqlS
4.0.0
autentia
course-catalogue
0.0.1-SNAPSHOT
war
false
UTF-8
5.1.6.RELEASE
3.2.8
1.1.1
5.1.47
2.9.5
3.1.0
3.6.1
5.2.11.Final
mybatis.configpublic class QueryInterceptorRegistry {
private static ThreadLocal queryInterceptor = new ThreadLocal<>();
public static QueryInterceptor getQueryInterceptor() {
return queryInterceptor.get();
}
public stat
org.mybatis.generator
mybatis-generator-maven-plugin
1.3.5
mysql
mysql-connector-java
6.0.6
... and
(o.prim_id = '7' or o.second_id = '7') or
(o.prim_id = '8' or o.second_id = '8') or
(o.prim_id = '9' or o.second_id = '9') ...
AND
(
(o.prim_id = {tid} or o.second_id = {tid})
(I'm sure mybatis prov
mysql
mysql-connector-java
5.1.39
org.mybatis
mybatis
3.2.8
org.mybatis
mybatis-spring
1.2.2
org.springframework@RunWith(SpringRunner.class)
class UserServiceTest{
@InjectMocks
UserService userService;
@Mock
UserDao userDao;//This is a reference to the interface (UserDao) which is mapped using MyBatis
...
}
Community Discussions
Trending Discussions on mybatis-3
QUESTION
I'm updating a spring boot project by adding a page called news and it has error below.
Field newsService in com.lrs.admin.controller.NewsController required a bean of type 'com.lrs.admin.service.INewsService' that could not be found.
The code is like below: Application.java
...ANSWER
Answered 2022-Apr-07 at 09:59you should annotate @Service on the class which implements the interface instead of the interface itself. That is, annotate the NewsService with @Service, and you can remove the @Component tag from INewsService
QUESTION
Some version information:
- Jboss 6.4
- Postgres 9.6
- mybatis-3 CDI
- Postgres Driver 42.2.20 JDBC 4
I'm having a problem that is causing pretty catastrophic behavior in my system. From my debugging I've been able to deduce that an idle transaction appears to be locking a table in my database, causing the application to freeze (certain locks aren't being released). I've been able to stop the freezing my setting timeouts in mybatis but I cannot figure out what is causing the idle transaction in the first place. The good news is that its always the same UPDATE statement that appears to be blocked. However, I can't narrow down what query/trans curring and I'm seeing behavior that I understand.
Here is the query that always seems to lock up (Some names were changed but this query normally works):
...ANSWER
Answered 2022-Feb-15 at 16:39So I discovered what the problem was. The issue really wasn't the database's fault or even the queries that were being used. It turns out that our system was using the same Transaction subsystem for both it our Data Source (Postgres Database) and our JMS messaging system. When a JMS message was sent, it created a transaction and every transactional based action that followed during the life cycle of that tread/transaction would be treated as part of that original transaction. Which includes all of our database calls.....
This explains why a query as simple as insert into a message log was touching all of our relations in the database. The debug queries only showed me the first query/statement sent to the database, not all of the others that were used during the life cycle of the JMS message. There were several ways to fix this but my team opted for the easiest which was preventing the Data Source from using the JBoss provided Transaction Manager.
QUESTION
I'm working with Spring Boot 2.4.5, MyBatis 3.5.6 and Java 8. When trying to return a String from a @RestController, an obscure error shows up in the returned HttpErrorResponse.
The method tries to obtain the value via MyBatis, i.e., a method in a DAO object that acts as a @Mapper.
My controller method:
...ANSWER
Answered 2021-Dec-21 at 16:25I think the problem is that the table you're querying has multiple rows, so the result of your query will be a List of string, containing "My desired result" on each element, in which the size of the list is equal to the number of rows in the table. In order to force a single result, just change the query to:
QUESTION
Even if you change it to the POST method, it keeps saying that there is no mapping for GET.
In the @RequestMapping part, I tried /create and / as well. and I tried it in the GET method, but then the following error appears.
...ANSWER
Answered 2021-Dec-13 at 09:11I see that you are using POST in your form, however your Controller API Endpoint is not the default /
The JSP form has to specify which action it should use on Submit..
QUESTION
I am referring to this section in the documentation of mybatis: https://mybatis.org/mybatis-3/sqlmap-xml.html#Nested_Results_for_Association
I have a table row that contains information about two entities (A, B). I want to parse one entity and associate the other entity to the first:
...ANSWER
Answered 2021-Aug-10 at 07:01I was using an old version of mybatis (3.5.3). The feature that I was missing came in this commit: https://github.com/mybatis/mybatis-3/commit/e05d686bf8bb5b0d7c319a117e47e77e969880cb#diff-07ec4f0ed5561eb9a977945899598048e355554d0fa2e50f173e525e6b8f3574
Which is available from 3.5.5 onwards. I upgraded to 3.5.7.
QUESTION
In my Oracle database I have a stored procedure TEST_PROC():
...ANSWER
Answered 2021-Jul-26 at 09:23I don't know Java nor YourBatis (just kidding; MyBatis), but - as of Oracle, it looks as if user you're connected to doesn't contain that procedure.
Here's what I mean: there's no procedure accessible to me whose name contains TEST as the first part of its name:
QUESTION
Okay so this is kinda re-posting of this question Inserting HashMap Values to a table using ibatis (but I am looking for a different way - the answer wont work for me)..
DB1GetStudentDataMapper.xml (this queries to one database)
...ANSWER
Answered 2021-Jul-01 at 19:54When iterating a map using , the key and the value are assigned to the variables specified in index and item respectively.
So, your insert statement should look something like this.
QUESTION
To avoid deadlock, I want to update a list of ids row-by-row. To rollback data in spring, i am using annotation Transactional. But when i test the transaction, when an update sql throws an exception, it didn't rollback the data from the record that be updated before. Here is my code:
...ANSWER
Answered 2021-Jun-30 at 09:26Here is everything that will work
QUESTION
...So i'm creating CRUD Spring Using Mybatis, when i run the application, it gives me error like this
ANSWER
Answered 2021-Jun-29 at 14:21The parameterType attribute of your insert method in the XML is set wrongly, it should be com.model.Siswa instead of java.com.model.Siswa.
Also, the parameterType attribute is optional, MyBatis can infer the parameter type from the object passed in when calling the insert method.
QUESTION
** I am implementing role-based access control to my application. There are 3 users(Admin, Teacher, Student) in the application with same attribute so I created a basedUser entity to let them inherit it. I wished to get the user's authority when I select it from the database, so I created a type handler to convert the authority in String type to GrantedAuthority type in the process but I don't know why I keep getting this error: **
nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating interface org.springframework.security.core.GrantedAuthority with invalid types () or values (). Cause: java.lang.NoSuchMethodException: org.springframework.security.core.GrantedAuthority.()] with root cause
java.lang.NoSuchMethodException: org.springframework.security.core.GrantedAuthority.() at java.base/java.lang.Class.getConstructor0(Class.java:3349) ~[na:na] at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2553) ~[na:na] at org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:60) ~[mybatis-3.5.4.jar:3.5.4] at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:53) ~[mybatis-3.5.4.jar:3.5.4] at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:45) ~[mybatis-3.5.4.jar:3.5.4] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:616) ~[mybatis-3.5.4.jar:3.5.4] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:591) ~[mybatis-3.5.4.jar:3.5.4]
I have been looking for answers to this problem but not getting anywhere close, does anyone know how to solve this problem??
Entity
...ANSWER
Answered 2021-Jun-14 at 07:50Type handler is not a good fit for your usage.
You should use constructor mapping.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install mybatis-3
You can use mybatis-3 like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the mybatis-3 component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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